lawmakers said it was confirmed to them susan rice was told spontaneous protests over an islamic film sparked the attack. rice was given the information as part of an unclassified briefing before she appeared on sunday morning talk shows five days after the attack. >> that unclassified version turned out to be inaccurate as we found out later. >> reporter: several republican senators are threatening to block rice from becoming the next secretary of state because of her assertions that the attacks didn't appear to be pre-planned. petraeus' testimony is critical to this investigation. several more hearing are yet to be held. >>> a preliminary investigation indicates the railroad crossing gate and lights weren't working when a freight train slammed into a float. the float was carrying wounded veterans and spouses yesterday. four people are dead. the float was about halfway across the tracks when the crossing gates came down. >> the truck tried to blow his horn to get the other people out of his way. the gates actually hit the first people on the trailer. started going back up and it wasn